| Honorific Prefix: | FRS |
| Stephen Robert Nockolds | |
| Birth Date: | 1909 5, df=y |
| Birth Place: | St Columb Major, Cornwall |
| Citizenship: | United Kingdom |
| Fields: | Geochemistry, Geology, Petrology |
| Workplaces: | Trinity College, Cambridge |
| Education: | Trinity College, Cambridge (PhD) |
| Alma Mater: | Manchester University |
| Thesis1 Title: | and |
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| Thesis1 Url: | and |
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| Thesis1 Year: | and |
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| Doctoral Advisors: | )--> |
| Spouses: | Hilda Jackson (m. 1932–1976) Patricia Horsely (m. 1976) |
| Partners: | )--> |
Stephen Robert Nockolds, FRS[1] (10 May 1909 – 7 February 1990) was a geochemist, petrologist and winner of the Murchison Medal of the Geological Society of London.
Robert Nockolds was born at St Columb Major, Cornwall, the son of Dr Stephen Nockolds, a surgeon of Brighton, and his wife Hilda Tomlinson. He was educated at Ascham St Vincent's School, Eastbourne and at Felsted School where his interest in rocks already manifested itself. He then went to Manchester University and then took a PhD at Trinity College, Cambridge. He became a Fellow of Trinity College, and lectured in petrology at Cambridge. In 1957 he became Reader in Geochemistry at Cambridge, and Emeritus Reader. In 1959 he became a Fellow of the Royal Society, and was also an Honorary Fellow of the Geological Society of India. In 1972 he retired from Cambridge and was awarded the Murchison Medal of the Geological Society. He published a leading work on petrology and a large number of papers in various journals as shown below.
In 1932 he married Hilda Jackson (1909–1976) and subsequently after she died in 1976 he married Patricia Horsley (1923 – 10 July 2013) He was known to his friends as Nocky or Bob and whilst he didn't have children of his own he was affectionately embraced by Patricia's large family.